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Consider the following statements:
In a nuclear reactor, a self-sustained chain reaction is possible, because:
1. More neutrons are released in each of the fission reactions.
2. The neutrons immediately take part in the fission process.
3. The fast neutrons are slowed down by graphite.
4. Every neutron released in the fission reaction initiates further fission.
In a nuclear reactor, a self-sustained chain reaction is possible, because:
1. More neutrons are released in each of the fission reactions.
2. The neutrons immediately take part in the fission process.
3. The fast neutrons are slowed down by graphite.
4. Every neutron released in the fission reaction initiates further fission.
Q. Which of these statements are correct?
- a)1, 2 and 3
- b)1 and 3
- c)2 and 4
- d)2, 3 and 4
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
Consider the following statements:In a nuclear reactor, a self-sustain...
A nuclear reactor is a device to initiate and control a sustained nuclear chain reaction. The most common use of nuclear reactors is for the generation of electrical power and for the power in some ships. In every fission reaction in which uranium nuclei splits up to give smaller nuclei three more neutrons are produced which further results into splitting of heavy uranium nuclei and more number of neutrons will be produced. Thus, statement, 1 and 2 are correct. In nuclear reactor all the neutrons produced can not take part in fission reaction, else reaction can turn out extremely violent. Thus, graphite rods are used as a control rods to slow down the speed of fast moving neutrons. Thus, statement 3 is also correct.
Most Upvoted Answer
Consider the following statements:In a nuclear reactor, a self-sustain...
Explanation:
Self-sustained chain reaction is possible in a nuclear reactor due to the following reasons:
1. More neutrons are released in each of the fission reactions:
When a nucleus undergoes fission, it breaks up into two smaller nuclei, along with the release of a few neutrons. These neutrons can then go on to cause further fission reactions.
2. The neutrons immediately take part in the fission process:
The neutrons released during fission are usually fast-moving and require some moderation to be absorbed by another nucleus. However, in a nuclear reactor, there are materials present that can slow down these fast-moving neutrons, allowing them to be absorbed by other nuclei and cause further fission reactions.
3. The fast neutrons are slowed down by graphite:
Graphite is used as a moderator in nuclear reactors because it has the ability to slow down fast-moving neutrons, making them more likely to be absorbed by other nuclei and cause further fission reactions.
4. Every neutron released in the fission reaction initiates further fission:
As mentioned earlier, the neutrons released during fission can go on to cause further fission reactions. This creates a chain reaction, where each fission reaction releases more neutrons, which in turn cause more fission reactions.
Therefore, the correct statements are:
1. More neutrons are released in each of the fission reactions.
2. The neutrons immediately take part in the fission process.
3. The fast neutrons are slowed down by graphite.
Hence, option A is the correct answer.
Self-sustained chain reaction is possible in a nuclear reactor due to the following reasons:
1. More neutrons are released in each of the fission reactions:
When a nucleus undergoes fission, it breaks up into two smaller nuclei, along with the release of a few neutrons. These neutrons can then go on to cause further fission reactions.
2. The neutrons immediately take part in the fission process:
The neutrons released during fission are usually fast-moving and require some moderation to be absorbed by another nucleus. However, in a nuclear reactor, there are materials present that can slow down these fast-moving neutrons, allowing them to be absorbed by other nuclei and cause further fission reactions.
3. The fast neutrons are slowed down by graphite:
Graphite is used as a moderator in nuclear reactors because it has the ability to slow down fast-moving neutrons, making them more likely to be absorbed by other nuclei and cause further fission reactions.
4. Every neutron released in the fission reaction initiates further fission:
As mentioned earlier, the neutrons released during fission can go on to cause further fission reactions. This creates a chain reaction, where each fission reaction releases more neutrons, which in turn cause more fission reactions.
Therefore, the correct statements are:
1. More neutrons are released in each of the fission reactions.
2. The neutrons immediately take part in the fission process.
3. The fast neutrons are slowed down by graphite.
Hence, option A is the correct answer.
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Consider the following statements:In a nuclear reactor, a self-sustained chain reaction is possible, because:1. More neutrons are released in each of the fission reactions.2. The neutrons immediately take part in the fission process.3. The fast neutrons are slowed down by graphite.4. Every neutron released in the fission reaction initiates further fission.Q. Which of these statements are correct?a)1, 2 and 3b)1 and 3c)2 and 4d)2, 3 and 4Correct answer is option 'A'. Can you explain this answer?
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Consider the following statements:In a nuclear reactor, a self-sustained chain reaction is possible, because:1. More neutrons are released in each of the fission reactions.2. The neutrons immediately take part in the fission process.3. The fast neutrons are slowed down by graphite.4. Every neutron released in the fission reaction initiates further fission.Q. Which of these statements are correct?a)1, 2 and 3b)1 and 3c)2 and 4d)2, 3 and 4Correct answer is option 'A'. Can you explain this answer? for Defence 2024 is part of Defence preparation. The Question and answers have been prepared according to the Defence exam syllabus. Information about Consider the following statements:In a nuclear reactor, a self-sustained chain reaction is possible, because:1. More neutrons are released in each of the fission reactions.2. The neutrons immediately take part in the fission process.3. The fast neutrons are slowed down by graphite.4. Every neutron released in the fission reaction initiates further fission.Q. Which of these statements are correct?a)1, 2 and 3b)1 and 3c)2 and 4d)2, 3 and 4Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Defence 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following statements:In a nuclear reactor, a self-sustained chain reaction is possible, because:1. More neutrons are released in each of the fission reactions.2. The neutrons immediately take part in the fission process.3. The fast neutrons are slowed down by graphite.4. Every neutron released in the fission reaction initiates further fission.Q. Which of these statements are correct?a)1, 2 and 3b)1 and 3c)2 and 4d)2, 3 and 4Correct answer is option 'A'. Can you explain this answer?.
Consider the following statements:In a nuclear reactor, a self-sustained chain reaction is possible, because:1. More neutrons are released in each of the fission reactions.2. The neutrons immediately take part in the fission process.3. The fast neutrons are slowed down by graphite.4. Every neutron released in the fission reaction initiates further fission.Q. Which of these statements are correct?a)1, 2 and 3b)1 and 3c)2 and 4d)2, 3 and 4Correct answer is option 'A'. Can you explain this answer? for Defence 2024 is part of Defence preparation. The Question and answers have been prepared according to the Defence exam syllabus. Information about Consider the following statements:In a nuclear reactor, a self-sustained chain reaction is possible, because:1. More neutrons are released in each of the fission reactions.2. The neutrons immediately take part in the fission process.3. The fast neutrons are slowed down by graphite.4. Every neutron released in the fission reaction initiates further fission.Q. Which of these statements are correct?a)1, 2 and 3b)1 and 3c)2 and 4d)2, 3 and 4Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Defence 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following statements:In a nuclear reactor, a self-sustained chain reaction is possible, because:1. More neutrons are released in each of the fission reactions.2. The neutrons immediately take part in the fission process.3. The fast neutrons are slowed down by graphite.4. Every neutron released in the fission reaction initiates further fission.Q. Which of these statements are correct?a)1, 2 and 3b)1 and 3c)2 and 4d)2, 3 and 4Correct answer is option 'A'. Can you explain this answer?.
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